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| author |   Joseph Lo <josephl@nvidia.com> | 2012-10-31 17:41:16 +0800 |
|---|---|---|
| committer |   Stephen Warren <swarren@nvidia.com> | 2012-11-15 15:09:21 -0700 |
| commit | d3f293656c07a1147c11e8c8774d7955a903cee0 (patch) | |
| tree | f17307f8dfa112840ba00d05eef16d0d37f9921c /arch/arm/mach-tegra/reset.c | |
| parent | ARM: tegra: cpuidle: separate cpuidle driver for different chips (diff) | |
| download | linux-dev-d3f293656c07a1147c11e8c8774d7955a903cee0.tar.xz linux-dev-d3f293656c07a1147c11e8c8774d7955a903cee0.zip | |
ARM: tegra: cpuidle: add CPU resume function
The CPU suspending on Tegra means CPU power gating. We add a resume
function for taking care the CPUs that resume from power gating status.
This function was been hooked to the reset handler. We take care
everything here before go into kernel.
Be aware of that, you may see the legacy power status "LP2" in the code
which is exactly the same meaning of "CPU power down".
Based on the work by:
Scott Williams <scwilliams@nvidia.com>
Colin Cross <ccross@android.com>
Gary King <gking@nvidia.com>
Signed-off-by: Joseph Lo <josephl@nvidia.com>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Diffstat (limited to 'arch/arm/mach-tegra/reset.c')
| -rw-r--r-- | arch/arm/mach-tegra/reset.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/arm/mach-tegra/reset.c b/arch/arm/mach-tegra/reset.c index e05da7d10c3b..3fd89ecd158e 100644 --- a/arch/arm/mach-tegra/reset.c +++ b/arch/arm/mach-tegra/reset.c @@ -25,6 +25,7 @@ #include "iomap.h" #include "irammap.h" #include "reset.h" +#include "sleep.h" #include "fuse.h" #define TEGRA_IRAM_RESET_BASE (TEGRA_IRAM_BASE + \ @@ -79,5 +80,10 @@ void __init tegra_cpu_reset_handler_init(void) virt_to_phys((void *)tegra_secondary_startup); #endif +#ifdef CONFIG_PM_SLEEP + __tegra_cpu_reset_handler_data[TEGRA_RESET_STARTUP_LP2] = + virt_to_phys((void *)tegra_resume); +#endif + tegra_cpu_reset_handler_enable(); } |